This ingeniously designed Cup Holder glides open with an easy one-hand touch. It adjusts to fit and secure all types of cups, glasses and bottles and holds 9 fluid-ounce cans or 1 liter water bottles (holds cups from 2 1/4" to 3 1/4" in diameter). In fact, it's the same cup holder used in several Mercedes models including the 500SL. When closed, measures 4 3/4"l x 4"w x 1 1/2"h. Not some cheesy accessory, but nicely made in Germany.